A jury resumes deliberations Thursday in the murder trial of a Virginia grandmother charged with tossing her 2-year-old granddaughter to her death from a sixth-level pedestrian bridge at Tysons Corner.

A psychologist who treated Carmela Dela Rosa for a decade said she had never been more concerned about the woman's state of mind than in the weeks leading up to Dela Rosa's alleged murder of her granddaughter.

Defense lawyers presented expert testimony Thursday from doctors to bolster their claim that a Virginia grandmother was legally insane when she tossed her granddaughter over a Tysons Corner walkway to her death.

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